Path: utzoo!attcan!uunet!husc6!bbn!rochester!cornell!batcomputer!itsgw!mailrus!iuvax!pur-ee!uiucdcs!uiucdcsm!ksung
From: ksung@uiucdcsm.cs.uiuc.edu
Newsgroups: comp.windows.x
Subject: Need Help on XESetErrorString
Message-ID: <26900040@uiucdcsm>
Date: 16 Jun 88 22:28:00 GMT
Lines: 27
Nf-ID: #N:uiucdcsm:26900040:000:819
Nf-From: uiucdcsm.cs.uiuc.edu!ksung    Jun 16 17:28:00 1988



I'm working on a X-Extension, and here is a problem with ErrorString
hook into the Xlib.

Can someone help me with <XESetErrorString> ?

The C binding Xlib has a very confusing decription, which I couldn't
understand. (AppendixA in X11R1 1 and appendixD in X11R2)

Xlib seemed to suggest that XESetErrorString sets the function 
to be called when there is an I/O error, and XESetFlushGC sets
the function to be called when application calls XGetErrorText.

but I looked at the source code of

	XESetErrorString in 	./lib/X/XInitExt.c  	and
	XGetErrorText  	 in	./lib/X/XErrDes.c 

seems to me XESetErrorString is setting the function to be
called when XGetErrorText is called. Then what's XESetFlushGC do, 
and how to set the function to be called when there are I/O errors?

Thanks in advance.

ksung@m.cs.uiuc.edu